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Unit 3

Creating Graphics & Images Bit by Bit

3.1 Unit Overview

3.2 Paint Pot Tutorial

3.3 Representing Images

3.4 Paint Pot Projects

3.5 Paint Pot Refactoring

3.6 Error Detection

3.7 Parity Error Checking

3.8 Magic 8 Ball

3.9 Persisting Photos

3.10 Map Tour

3.11BB Electronic Documents

3.12 Wrap Up


Paint Pot Tutorial

Paint Pot is a basic “finger painting” app. It simulates the process of dipping your finger in a pot of a paint and then drawing on a canvas. The app uses buttons to simulate dipping your finger in the paint and uses App Inventor’s touch event handlers to draw circles and lines on the canvas.

This tutorial also introduces the concept of a global variable.

Unit Objectives

Make sure that you do the self-check at this link and your Google Site Portfolio